Piroxicam EP Impurity E

Name: Piroxicam EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-023509

About Piroxicam EP Impurity E

Piroxicam EP Impurity E (CAS 24683-20-3) is a pharmacopeial impurity of Piroxicam offered by Vaqora Chemicals. Formula C11H11NO5S, molecular weight 269.28 g/mol. The IUPAC name is ethyl 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetate. Common synonyms include Piroxicam - Impurity E and Saccharin N-(2-acetic acid ethyl ester).

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

This Piroxicam impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Piroxicam

View every impurity, metabolite and intermediate we list for Piroxicam.

Piroxicam impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Piroxicam EP Impurity E
Catalogue No.	VQ-023509
CAS Number	24683-20-3
IUPAC name	ethyl 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetate
Molecular formula	C₁₁H₁₁NO₅S
Molecular weight	269.28 g/mol
Exact mass	269.0358
Grade	Reference Standard
HSN code	38229090
InChIKey	YKCQHUPTHHPHGX-UHFFFAOYSA-N
SMILES	CCOC(=O)CN1C(=O)C2=CC=CC=C2S1(=O)=O
PubChem CID	607195

Physical properties
Physical form	Solid
LogP (XLogP3)	0.9
H-bond donors / acceptors	0 / 5
TPSA	89.1 Å²
Synonyms	Saccharin N-(2-Acetic Acid Ethyl Ester)(Piroxicam Impurity E), Piroxicam - Impurity E, Saccharin N-(2-acetic acid ethyl ester), Ethyl (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate, Piroxicam Impurity E, 1,2-Benzisothiazole-2(3H)-acetic acid, 3-oxo-, ethyl ester, 1,1-dioxide, ethyl (1,1-dioxido-3-oxo-1,2-benzothiazol-2(3H)-yl)acetate, Ethyl2,3-dihydro-3-oxo-1,2-benzisothiazole-2-acetate-1,1-dioxide, Ethyl 2-(1,1-dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)acetate, ethyl 2-(1,1,3-trioxo-2,3-dihydro-1lambda6,2-benzothiazol-2-yl)acetate, 3-Oxo-1,2-benzisothiazole-2(3H)-acetic Acid Ethyl Ester 1,1-Dioxide, Ethyl 3-oxo-1,2-benzoisothiazoline-2-acetate 1,1-dioxide

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled

Precautionary statements: P261, P264, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P362 + P364, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Piroxicam EP Impurity E?

The CAS Registry Number of Piroxicam EP Impurity E is 24683-20-3. It is also known as Saccharin N-(2-Acetic Acid Ethyl Ester)(Piroxicam Impurity E), Piroxicam - Impurity E, Saccharin N-(2-acetic acid ethyl ester).

What is the molecular formula and molecular weight of Piroxicam EP Impurity E?

Piroxicam EP Impurity E has the molecular formula C11H11NO5S and a molecular weight of 269.28 g/mol. Its IUPAC name is ethyl 2-(1,1,3-trioxo-1,2-benzothiazol-2-yl)acetate.

What is Piroxicam EP Impurity E used for?

Piroxicam EP Impurity E is supplied as a characterised reference material related to Piroxicam. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Piroxicam EP Impurity E can I order?

We supply Piroxicam EP Impurity E in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Piroxicam EP Impurity E?

Yes. Every lot of Piroxicam EP Impurity E is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Piroxicam EP Impurity E be shipped internationally?

Yes. Piroxicam EP Impurity E is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.